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Natural Gas Proved Reserves, Wet After Lease Separation
(Billion Cubic Feet)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2002 2003 2004 2005 2006 2007 View
History
Proved Reserves as of Dec. 31
195,561 197,145 201,200 213,308 220,416 247,789 1979-2007
Adjustments
4,006 2,323 170 1,693 946 990 1979-2007
Revision Increases
21,240 20,780 28,116 23,362 21,640 33,404 1979-2007
Revision Decreases
20,202 22,495 27,291 20,647 23,739 17,468 1979-2007
Sales
10,665 10,593 11,583 9,632 23,904 15,518 2000-2007
Acquisitions
11,093 11,700 13,558 12,306 27,082 15,970 2000-2007
Extensions
15,468 17,195 19,068 22,069 22,834 28,255 1979-2007
New Field Discoveries
1,374 1,252 790 973 425 814 1979-2007
New Reservoir Discoveries in Old Fields
1,752 1,653 1,244 1,243 1,197 1,244 1979-2007
Estimated Production
20,248 20,231 20,017 19,259 19,373 20,318 1979-2007
- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Notes: Miscellaneous States includes Arizona, Illinois, Indiana, Maryland, Missouri, Nebraska, Nevada, Oregon, South Dakota, and Tennessee.  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 11/10/2008
Next Release Date: 10/16/2009